STABILO Write-4-All Fine Permanent Marker 0.7mm Line Assorted Colours (Wallet 4) The STABILO Write-4-all fine permanent marker will write on almost any surface, including glass, metal, plastic, wood, photos, foil, ceramics, card, CDs and DVDs. The fine tip writes a line width of 0.7mm and the permanent ink is heat proof, frost proof, water proof and lightfast. This pack contains 4 Fine pens in Black, Blue, Red and Green